Portable electric pump



(.No Model.)

O. J. VAN DEPOELB, Deo'd. G. A. COFFIN 8r; A. WAHL, Administrators. PORTABLE ELEGTRIG'PUMP.

. UNITED STATES PATENT OFFICE.

CHARLES J. VAN DEPOELE, OE LYNN, MASSACHUSETTS; C. A. COFFIN AND ALBERT WAHL, ADMINISTRATORS OF SAID VAN DEPOELE, DECEASED, ASSIGNORS TO THE THOMSON-HOUSTON ELECTRIC COM-' PANY, OF BOSTON, MASSACHUSETTS. I

PORTABLE ELECTRIC PUMP.

SPECIFICATION forming part of Letters Patent No. 507,946, dated October 31, 1893.

Application filed February 26, 1891- Serial No. 382,875. (No model.) I

To all whom it may concern.-

Be it known that I, OHAELEs J. VAN DE POELE, a citizen of the'United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Portable Electric Pumps, of which the following is a description, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon.

My invention relates to improvements in reciprocating electric engines, of the type in which a current of rising and falling characacter is alternately supplied from a distant source to two sets of motor coils within which "the magnetic piston is reciprocated by the movements of the field of force therein.

The invention is, in the present instance,

applied to the combination with an electric reciprocating engine of a pumping apparatus attached to the engine, and connected directly one set of coils to the other in order-that the full power may be applied to the piston during the greatest length of time. 1

In a contemporaneous application I have shown, described, and claimed, an automatic pumping engine in which the current will recurrent.

main in one set of motor coils until. the piston has completed its travel, the apparatus therefore being independent of the source of In the present instance, however,

' the shifting of the current in the motor coils is accomplished entirely by devices at the genorator or source and the machine is therefore in synchronism with the generator, the result being, of course, that where more or less currentis required for the satisfactory performance of the work, the same would have to be provided for at the station.

The invention also comprises various details of construction and arrangement, as will appear.

In the accompanying drawings-Figure 1 is a diagrammatic view, showing the relative arrangement of the circuits. Fig. 2 is a view in elevation partly in diagram, showing an electro magnetic reciprocating pumping engine embodying the invention. Fig. 3, is an enlarged detail of the connection box.

In the drawings, Fig.1, A, represents the sectional commutator of a continuous current machine, which may be either a generator or a counter electro motive force device in a continuous current circuit. P, N, are the positive and negative main commutator brushes thereof; D, is a third and rotatably mounted commutator brush adapted to be moved about the commutator. The brush D, is mounted, for example, in an arm d, carried by a sleeve E, rotatably mounted upon and suitably insulated from the armature shaft F. Gear teeth e, are provided upon the sleeve E, and a rack bar G, is in mesh with the teeth 6. A pitman or connecting rod H, is connected with the rack bar G, through which rotary or radial movement may be imparted to thearm d, and the auxiliary commutator brush D, carried thereby. In the present instance it is desired that thebrush D, be moved rapidly or even spasmodically from a position in front of or near to one'of' the main commutator brushes, to a like position with respect to the other main brush, and this movement may be secured in difierent ways, as for example, those set forth in my prior patent, No. 435,261, dated August 26, 1890.

The electric engine comprises motor coils C, C, through which a magnetic plunger B, is adapted to be reciprocated by their alternate action thereon. As indicated in the drawings, the outer terminal of coil C, is connected to the main positive commutator brush P, by conductor 1, the outer terminal of coil C, to the main negative commutator brush N, by conductor 2, and the inner terminals of said coils to the moving brush D, by conductor 3.

As seen in Fig. 2, the coils C, C, are contained within an exterior iron envelope composed of a shell I, and iron heads 1', The upper head i, is provided with ahook J, and chainj, by which it can be suspended in 0perative position. To the lower head 'i, is attached a pump K, which may be of any desired type or construction the piston 70, of said pump being connected directly with the piston rod (1, extending from the plunger B.

It will be understood that in speaking of coils C, O, and the three circuit wires 1, 2, 3, it is to be understood that I may use any combination of coils that can be operated by the three'wire system described, said coils being thereby energized to act alternately upon the piston, that is to say, that in connection with this invention I consider the arrangement set forth in my application, Serial No. 376,610, filed January 3, 1891, as the equivalent 0fthe construction herein shown and described, or that it may be substituted therefor without departing from the invention.

Upon some convenient part of the exterior envelope of the engine, which,of course, is to be completely water-proof, I place awater pro'of insulated terminal boxor block L, which is provided with contacts 1, 2, 3. The main conductors 1,2, 3, are led from the generator or source of defined current, and at a point conyenient to the work to be accomplished by the pumping engine, I provide a switch board M, which has three insulatedterminals 1 2 3 which should correspond in size, shape and arrangement to the terminals carried by the engine. Current is led from the switch board to the engine, through conductors 1, 2, 3% which are thoroughly insulated and combine together in the form of a waterproof flexible cable 0. The cable 0, besides having a covering of the best insulating material, should also be covered with some durable substance, as canvas, and this exterior covering should also be protected by whommor or equivalent means, which will prevent mechanical injury. A cable so constructed might safely pass through water without danger of mechanical injury and loss of current.

The cable 0, is provided at its extremities with cup-shaped terminal sockets Q, Q, one of which fits tightly upon the contact block L, of the engine, making a perfectly water-tight joint. The terminals contained within the socket Q, should be in the form of spring fingers q, g, which will, when in position, tightly clasp the terminals 1, 2, 3. While it is not essential that a water-proof joint be made with the terminals at the switch board M, it is desirable; and I prefer, therefore, to provide'the cable 0, with similar devices at each end in order to permit its ends to be used interchangeably, and also as giving added security against leakage.

Any desirable form of manual switch may be provided for opening the circuit between the main conductors and the switch board M, if desired, but the simplest means of accomplishing this end would be to detach the cable socket from the switch board terminals. It will be observed that the terminals 3, and 3", of the intermediate conductor, are made shorter than those of the main conductors. This is very important in practice as I find that by breaking the circuit of the intermediate conductor first, I can at any time, remove the cable at either end by simply detaching the terminal socket or sockets without the production of a dangerous or destructive are which will always be the case unless the circuit of the intermediate conductor be first broken.

Various changes and modifications may be made in the hereinbcfore described apparatus without departing from the invention. Having described my invention, what I claim, and desire tosecure by Letters Patent, 1s

1. An electric pumping engine systemcomprising a reciprocating electric engine having an exterior water-proof metallic casing, said casing provided with an insulated waterproof terminal box, a reciprocating pump, also inclosed within a metallic casing, the

casings of the engine and pu'mp being fitted and joined together to; form one integral apparatus, a piston rod extending from the movingpartofthe electricengine and joined to the piston rod of thepump, aprotected insulated cable formed of conductors corresponding in number with those of the electric engine, said conductorsterminating in a detachable water-proof socket, adapted to fit the terminal box of the engine, and connections from the other end of the cable to asuitable supply circuit;

2. An electric pumping engine system comprising a reciprocating electric engine having an exterior water-proofmetallic casing, said casing provided with an insulated waterproof terminal box, a reciprocating pump, also inclosed within a metallic casing, the casings of the engine and pump being fitted and joined together to form one integral apparatus, a piston rod extending from the moving part of the electric engineand joined to the piston rod of the pump, an insulated protected cable provided with detachable waterproof terminal sockets at each end, said sockets adapted to fit the terminalbox on the electric engine, and a switch board located near the engine and connected to a suitable supply circuit and having insulated terminals adapted to connect with the other end of the cable.

3. An electric engine having motor coils actuated by currents supplied through main conductors, in combination with an interme diate conductor of difierent lengtlnand detachable circuit connections, whereby the circuit of the intermediate conductor is ruptured before opening the circuit of the main conductors. y

4. The combination with a reciprocating electric engine, of a supply circuit comprising multiple conductors said conductors in-. in testimony whereof I aftix my signature in eluding mainconductors of substantially presence of two witnesses. equal length, and an intermediate conductor or conductors of a difierent length whereby CHARLES VAN DEPOELE' 5 on opening'the circuit of all the conductors Witnesses: t

the circuit of the intermediate conductor is JOHN W. GIBBONEY,

ruptured first. FRANKLAND JANNUS; 

